Rotary printing machine



y 5, 1932. o. WlLHELM ROTARY PRINTING MACHINE Filed March 8, 1929 inder.

Patented July 5, 1932 UNITED STATES PATENT OFFICE OT'IMAR WILHELM, F AUGSBURG, GERMANY, ASSIGNOR TO MASCHINENFABBIK AUGS- BURG-NURNBERG- A. G.', 01? AUGSBURG, GERMANY, A. CORPORATION OF GERMANY ROTARY PRINEKING MACHINE Application filed March 8, 1929, Serial No.

The object of my invention is a rotary printing machine provided with an additional printing mechanism for printing on a separate web supplements, more especially a rotary letterpress machine'for printing newspapers into which. rotogravure supplements are to be inserted. The task I have set myself is to combine the additional printing mechanism with the main machine in such a way, that the supplement may beinsertedinthe exact middle between the two innermost, pages of the newspaper copy. Another advantage which the novel device ofiers is the saving of floor space, as the machine in spite of the addition of for instance a rotogravure machine, becomes neither longer nor wider than an ordinary newspaper printing machine.

According to the present invention the additional printing mechanism is disposed at right angles to the axis of the main machine in such a way that the supplements may be added to the newspaper copies as they leave the folding means and together with such copies are conveyed to the folding cyl- In order to attain this end the rotogravure mechanisms are disposed below the folding means situated at one end of the main machine. Newspaper copy and supplement are severed from their respective webs, before they are assembled. If the supplement to be inserted into the letterpress newspaper copy is a rotogravure supplement, a separate variable cutting mechanism is according to this inventionprovided for severing the rotogravure web. In rotogravure machines printing from the reel the speed with which the web travels varies because of the circumference'of the form cylinder becoming smaller by degrees from grinding down after each use. If an ordinary nonvariable cutting mechanism were provided, it would be impossible to assemble main copy and supplement since the speed with which the supplement travels towards the folding mechanism decreasing after each successive grinding down of the form cylinder, would difl'er more-and more every time from the unchanging speed of the letterpress copies. If

however a separate variable cutting mechanism is provided for the rotogravure web the 345,833, andin Germany March 15, 1928.

movemeht of the supplement may be easily speeded upto that of the letterpress copies by means of transport rollers.

Covers as well as insets may be-produced by the additional printing mechanism according to the invention.

On the annexed drawing illustrating the mvention as applied to a rotary letterpress printing machine the products which are to be completed by a rotogravure supplement,

Fig. 1 is a side view and Fig. 2 anend view of the machine.

Coming ofi the reels 1 and 2 the webs 3 and 4 pass through the letterpress mechanisms 5 and 6 and then over folders 7 and 8 whereby theyv are'folded once, the combined webs then beings led toward the folding cylinders 10 and 17 where a cutting mechanism 11 divides the webs into separate copies which are then folded a second time by the folding cylinders 10 and 17.

A third web 13 which comes off thereel 12 and which is only half the width of webs 3 and 4 passes through the rotogravure printing mechanism 14 and 15 and is divided into separate copies. by the cutting cylinder 16 after which transportv rollers forming part of the variable cutting mechanism 16 convey the supplemental copies with the required speed to the folding cylinder 10 where'they are assembled with the newspaper copies which on leaving the .folding means 7 and 8 were severed from the webs by cutting mechanism '11. Together with these the supple ments are then folded by folding cylinders 10 and 17 and thereupon are delivered.

What I claim is:

In a rotary web printing machine, the combination with the main printing-mecha- 'nism inclusive of a frame and web printing, cutting and folding means carried thereby; of a supplemental printing mechanism complete in itself and independent of'the main printing mechanism printing on a web separate from the web printed on by the main mechanism and disposed substantially within the limits of the frame of the main printing mechanism whereby the combined machine occupies no greater amount of floor space than the main printing mechanism alone, and

mw ew means for assembling the products of the two independent printing mechanisms, the supplemental printing mechanism being disposed at right angles to the main printing mechanism and below the folding means of the main printing mechanism.

In testimony whereof I have afiixed my signature.

UTTMAR WLM. 

